Temporal variation in scattering and intrinsic attenuation due to earthquakes in East Asia.

ABSTRACT: Separated attenuation values have not been used in post-seismic variation research, although the scattering attenuation (Q_s^-1) parameter that can be used to estimate crustal inhomogeneity due to cracks. In this study, three earthquakes that occurred in Kumamoto (M7.3), Tottori (M6.6), and Gyeongju (M5.8) in 2016 were investigated by applying a multiple lapse time window analysis to seismograms recorded before and after the events. At a low frequency, significantly greater variation of the Q_s^-1 value was observed than the intrinsic attenuation (Q_i^-1) for the Kumamoto earthquake, whereas similarly large variation was observed for the Gyeongju earthquake. For the surrounding Kumamoto earthquake area of increased attenuation, ev

SUBMITTER: Iqbal MZ 

PROVIDER: S-EPMC8159974 | biostudies-literature | 2021 May

REPOSITORIES: biostudies-literature